The answer to the first clue in each pair is a word with the letter D somewhere in it. Remove the D phonetically and you'll have the answer to the second clue.

-1. Huge rock/ kind of hat-2. Animal with spots/ person in a colony-3. Long time without rain/ severe defeat-4. Wrote on an envelope to be mailed/ item on a police blotter-5. King Midas, for example/ scary film genre-6. Colonel in the game Clue/ something we all hope to pass-7. Ornaments on a necklace/ self-punishment for wrongdoing-8. Distance from side to side/ inhalation-9. Tonto, to the Lone Ranger/ person with ESP-10. Person who's afraid/ what a person who's afraid does-11. President Eisenhower/ color of snow-12. Sweets/ careful & shrewd

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We do not see things as they are, we see things as we are.